19
Reference Manual
00809-0100-4308, Rev BA
Section 3: Installation
December 2014
Installation
3.3.2
Flange connection on nozzles
Figure 3-3. Mounting in Nozzles
The transmitter can be mounted in nozzles by using an appropriate flange. It is recommended
that the nozzle size is within the dimensions given in
Note
The probe must not be in contact with the nozzle (except for the coaxial probe).
Table 3-2. Nozzle Considerations
3.3.3
Non-metallic tanks
Flexible twin lead probe or coaxial probe are the recommended choice for non-metallic tanks.
Single lead probes are not suited for non-metallic tanks or open atmosphere applications, due
to high susceptibility to strong electromagnetic fields.
Flexible single
lead probe
Rigid single lead
probe
Flexible twin
lead probe
Coaxial
probe
Recommended
nozzle diameter
4 in. (100 mm) or
more
4 in. (100 mm) or
more
4 in. (100 mm) or
more
> probe
diameter
Minimum nozzle
diameter
(1)
(1) The Trim Near Zone (TNZ) function may be necessary or an Upper Null Zone (UNZ) setup may be required to mask the nozzle.
1.5 in. (38 mm)
1.5 in. (38 mm) for
probe type 4A
2 in. (50 mm) for
probe type 4B
2 in. (50 mm)
> probe
diameter
Maximum nozzle
height
(2)
(2) Recommended maximum nozzle height. For coaxial probes there is no limitation on nozzle height.
4 in. (100 mm)
+ nozzle diameter
(3)
(3) For nozzles taller than 4 in. (100 mm), the Long Stud version is recommended (option code LS) to prevent the flexible portion from
touching the edge of the nozzle.
4 in. (100 mm)
+ nozzle diameter
4 in. (100 mm)
+ nozzle diameter
N/A
Maximum nozzle height
Minimum nozzle diameter
Summary of Contents for 3308A Rosemount 3308 Series
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Page 80: ...68 Reference Manual 00809 0100 4308 Rev BA Section 5 Operation December 2014 Operation ...
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